Archean
7 lettersadjectiverareUpdated June 2026
Definition
Relating to the geological eon spanning roughly 4,000 to 2,500 million years ago, during which the Earth's crust solidified and the earliest unicellular life appeared.
“Archean granite formations in northern Scotland are among the oldest exposed rocks in the British Isles.”
Pronunciation
Syllables
ar·che·an
Related Words
Synonyms
archeozoicarchaeozoicarchaean
Word Game Tips
🟩
Wordle
Starts ARC and ends -EAN with vowels A, E, and A, the H after ARC being the key distinguishing letter
🔤
Scrabble
Common letters and a -EAN ending that hooks to -S give ARCHEAN a reliable moderate Scrabble score
Words Related to Archean
Explore Similar Words
Try These Tools
Dictionary References
Look up archean in an authoritative dictionary for full definitions, pronunciation, and etymology.
Ready to test your word skills?
Download Word Challenge for unlimited word puzzles, a fresh Daily Challenge, and head-to-head multiplayer. Guess the hidden word in six tries or fewer!